20 Kreuzers - Maria Theresia Graz

Maria Theresia's monetary reforms of the early 1750s were the direct impetus for this issue — the Kremnitz, Vienna, and Graz mints were all brought into conformity under the Conventionsthaler standard established by the convention with Bavaria in 1753, fixing the thaler at 120 Kreuzer and rationalizing a system that had fragmented badly across the Habsburg hereditary lands. Graz, as the administrative center of Inner Austria, maintained its own mint throughout this period though it would be shuttered before the end of the century.

The Her. references spanning 863–873 indicate at least eleven distinct die varieties across the eleven-year run — collectors working this series typically find the later Graz dates considerably harder to source than Vienna contemporaries.